The familiar labels "night owl" and "early bird," long used in sleep research, don't fully capture the diversity of human ...

Heart disease is the leading cause of death in America, and being a night owl may be harming your cardiovascular health more ...

Being a night owl can be bad for your heart. That's according to a study showing night owls had poorer overall cardiovascular ...

People who stay up late are more likely to have heart attacks and strokes than people who go to bed earlier, new research ...

Researchers have identified five subtypes of the "early bird" and "night owl" sleep–wake patterns, each associated with different patterns of behavior and health.

Bad news for those who love to stay up late.

In a new study, regularly delaying bedtime was connected to increased risk of heart disease, especially for women. Here’s ...

People who naturally stay up late, self-described night owls, are more likely to have poor heart health than people with a ...

So-called "night owls" may face a higher risk for heart attack and stroke, a new study published Wednesday finds.

People who are more active later in the day appear to face a higher risk of cardiovascular disease, according to a new study. Researchers explain why.

WASHINGTON (AP) — Being a night owl can be bad for your heart. That may sound surprising but a large study found people who ...

Night owls face increased heart risks. A study found those active late at night have poorer heart health. This is due to a ...